Luhrs, the city's first two skyscrapers, are established on the Phoenix Historic Property Register - the crown jewels of its downtown. Opened in 1924 as the tallest building in Arizona, the Luhrs Building also represents the first major commercial office in Phoenix. The Luhrs Tower opened a few doors west in 1930 and became the state's tallest high rise and a Phoenix masterpiece. SEC of 1st Ave & Jefferson St in downtown Phoenic